kernel failure

Kernel failure message 1:
------------[ cut here ]------------
WARNING: at /build/buildd-linux-2.6_2.6.32-38-amd64-bk66e4/linux-2.6-2.6.32/debian/build/source_amd64_none/drivers/net/wireless/ath/ath9k/rc.c:686 ath_get_rate+0x1a1/0x3c5 [ath9k]()
Hardware name: R530/R730
Modules linked in: aes_x86_64 aes_generic parport_pc ppdev lp parport sco bridge stp bnep l2cap crc16 bluetooth cpufreq_userspace cpufreq_stats cpufreq_powersave cpufreq_conservative binfmt_misc uinput fuse snd_hda_codec_intelhdmi snd_hda_codec_realtek arc4 snd_hda_intel ecb snd_hda_codec ath9k snd_hwdep i915 mac80211 snd_pcm joydev ath snd_seq drm_kms_helper uvcvideo snd_timer cfg80211 drm snd_seq_device videodev v4l1_compat snd v4l2_compat_ioctl32 i2c_algo_bit soundcore rfkill i2c_i801 psmouse led_class video pcspkr battery evdev serio_raw i2c_core snd_page_alloc output button ac processor squashfs loop aufs(C) nls_cp437 vfat fat ext3 jbd mbcache nls_utf8 ntfs ide_generic ide_core sg usbhid sr_mod hid cdrom sd_mod crc_t10dif usb_storage ahci fan libata uhci_hcd sky2 ehci_hcd thermal thermal_sys scsi_mod usbcore nls_base [last unloaded: scsi_wait_scan]
Pid: 1598, comm: phy0 Tainted: G        WC 2.6.32-5-amd64 #1
Call Trace:
 [<ffffffffa03d9b96>] ? ath_get_rate+0x1a1/0x3c5 [ath9k]
 [<ffffffffa03d9b96>] ? ath_get_rate+0x1a1/0x3c5 [ath9k]
 [<ffffffff8104df9c>] ? warn_slowpath_common+0x77/0xa3
 [<ffffffffa03d9b96>] ? ath_get_rate+0x1a1/0x3c5 [ath9k]
 [<ffffffffa0341ec6>] ? rate_control_get_rate+0x76/0xb9 [mac80211]
 [<ffffffffa0347e17>] ? invoke_tx_handlers+0x580/0xb80 [mac80211]
 [<ffffffffa0338b34>] ? sta_info_get+0x2e/0x43 [mac80211]
 [<ffffffffa034760f>] ? ieee80211_tx_prepare+0x289/0x2d1 [mac80211]
 [<ffffffff8100f5e7>] ? __switch_to+0xd0/0x297
 [<ffffffffa03485e3>] ? ieee80211_tx+0x73/0x1d3 [mac80211]
 [<ffffffff81247e1c>] ? pskb_expand_head+0xe9/0x16d
 [<ffffffffa034895d>] ? ieee80211_xmit+0x21a/0x23b [mac80211]
 [<ffffffffa03489cd>] ? ieee80211_tx_skb+0x4f/0x58 [mac80211]
 [<ffffffffa033dd5b>] ? ieee80211_dynamic_ps_enable_work+0x42/0x7a [mac80211]
 [<ffffffff8106195f>] ? worker_thread+0x188/0x21d
 [<ffffffffa033dd19>] ? ieee80211_dynamic_ps_enable_work+0x0/0x7a [mac80211]
 [<ffffffff81064f92>] ? autoremove_wake_function+0x0/0x2e
 [<ffffffff810617d7>] ? worker_thread+0x0/0x21d
 [<ffffffff81064cc5>] ? kthread+0x79/0x81
 [<ffffffff81011baa>] ? child_rip+0xa/0x20
 [<ffffffff81064c4c>] ? kthread+0x0/0x81
 [<ffffffff81011ba0>] ? child_rip+0x0/0x20
---[ end trace 5ef78973d3d1fe3f ]---